In PHP versions 7.3.x below 7.3.26, 7.4.x below 7.4.14 and 8.0.0, when validating URL with functions like filter_var($url, FILTER_VALIDATE_URL), PHP will accept an URL with invalid password as valid URL. This may lead to functions that rely on URL being valid to mis-parse the URL and produce wrong data as components of the URL.
https://bugs.php.net/bug.php?id=77423
https://www.debian.org/security/2021/dsa-4856
https://security.netapp.com/advisory/ntap-20210312-0005/
https://security.gentoo.org/glsa/202105-23
https://lists.debian.org/debian-lts-announce/2021/07/msg00008.html
Source: MITRE
Published: 2021-02-15
Updated: 2022-08-29
Type: CWE-20
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM